Recently, Canlon Waterproofing Systems provided on-site technical guidance for the roof repair project of the Johar high-end commercial complex in Lahore, Pakistan, once again demonstrating the international strength of Canlon Waterproofing Systems. Located in a high-end business and residential area of Lahore, the project boasts convenient transportation, a large building scale, and diverse business formats, including retail, catering, entertainment, and supporting services, thus requiring high reliability of the roof waterproofing. The roof utilizes a single-ply polymer waterproof membrane system. However, after the mall opened, the Pakistani maintenance and construction teams lacked a standardized management system: there were no dedicated protective walkways on the roof, repairs lacked standardized procedures, and repeated damage to the membrane during long-term inspections, cleaning, and equipment maintenance resulted in numerous tears, holes, and leaks due to sealant failure.
In the field of building waterproofing, a profound conceptual transformation is reshaping the design and construction logic of roofing systems. Traditional "built-up roofing" adopts a "heavy" approach of stacking multiple layers of asphalt and felt, attempting to achieve waterproofing through material accumulation. In contrast, the "single-ply roofing system," represented by TPO and PVC membranes, achieves a fundamental shift from "quantity" to "quality" and from "layering" to "integration" with its lightweight yet multifunctional single-layer membrane. Single-ply roofing refers to a roofing system that uses a single layer of flexible waterproofing membrane as the primary waterproofing component, working in conjunction with insulation layers, vapor retarders, and other components. Introduced to China in 1999, after more than two decades of development, it has become widely adopted in industrial plants, stadiums, airports, large commercial buildings, and other venues, emerging as a mai
In the realm of single-ply roofing systems, TPO (Thermoplastic Polyolefin) and PVC (Polyvinyl Chloride) stand as two undisputed "titans." Both belong to the thermoplastic membrane family, both utilize hot-air welding technology, and both can form monolithic waterproofing layers. However, these "twins" have fundamental differences in material chemistry, performance characteristics, and application scenarios. Should you choose TPO, known for its cost-effectiveness and environmental friendliness, or PVC, recognized for its robust performance and chemical resistance? This article provides a comprehensive multi-dimensional comparison covering weatherability, environmental friendliness, fire performance, cost, and construction friendliness. Instead of declaring an absolute winner, we aim to help you find the true "champion" for your specific project.
On January 8, 2024, the "Glass Fiber Reinforced Thermoplastic Polyolefin (TPO) Waterproofing Membrane" T/CWA 215-2024 group standard edited by CANLON was officially approved and will be implemented on April 1, 2024